Arnaud Daniel was the inventor of the Sestina , a song of six stanzas of six lines each, with the same rhymes repeated in all, though arranged in different and intricate order, which must be seen to be understood. He was also author of the metrical romance of Lancillotto , or Launcelot of the Lake, to which Dante doubtless refers in his expression prose di romanzi , or proses of romance. The following anecdote is from the old Provençal authority, quoted both by Millot and Raynouard, and is thus translated by Miss Costello, Early Poetry of France , p. 37:⁠—